For what it's worth here is my opinion on the matter. I graduated in pretty much the same circumstances 12 years ago, got a 2.2 from a decent university, didn't feel like I learnt much during my degree (most of the same way you're feeling really) etc etc.
One of the biggest problems facing grads when they leave university is a major lack of knowledge/information about what jobs actually exist out there. For most of them you don't need to go on a grad scheme - if you want to be raking in the pounds in your first two years you pretty much have to go and work in a bank in London - like everyone else wants to. My advice is this. 1. sit down and think about what you are genuinely good at. Not academic stuff or fluffy buzz word stuff (like team working etc etc). What are you really and honestly good at. It might be simple stuff like talking to people or being really annoyingly organised. Make a list and keep it honest and real. 2. Have a think about what possible jobs you may have heard or where these skills might be useful. Investigate a few of them. What you'll find is that the more you find out about one job the more you'll realise that there are 20 similar but different ones you've never heard of.
You've talked about the banking sector? Why that? What's interesting to you about that? What do you actually know or care about it? If you can't answer those questions you'll find yourself in the same circumstances you found yourself in during your degree.
After doing all this you'll need a decent CV - a really decent CV. This is my area of specialism so I know how important it is. Work really hard on making your CV interesting, genuine and then apply to stuff. You can't use the same CV for each job, you'll need to tweak it to make it relevant to each role you're applying for. More often that not I see the same old boring buzz word bingo on CVs and they go straight into the reject pile - regardless of your grade. Apply to lots of different job, ask for feedback, ask your parents / family / friends if they know anyone you can send your CV to. It's a lot of effort but frankly job hunting is a full time job. I could go on a bit more but see how you feel about all that first.
I'm happy to answer any specific questions so feel free to ask away. My way of giving a bit back as I know where you're coming from.